D-ring



FIG. 1 is a perspective view of an embodiment of D-ring.

FIG. 2 is a first side elevational view of FIG. 1.

FIG. 3 is a second side elevational view of FIG. 1.

FIG. 4 is a top plan view of FIG. 1.

FIG. 5 is a bottom plan view of FIG. 1.

FIG. 6 is a front elevational view of FIG. 1; and,

FIG. 7 is a rear elevational view of FIG. 1.

The broken lines illustrate environmental supplementary structure of the D-ring and form no part of the claimed design. 

CLAIM The ornamental design for a D-ring, as shown and described. 